WMRMHeader.Verify

The Verify method verifies the signature in the data section of the content header.

Syntax

Long verifyResult = WMRMHeader.Verify(bstrPubKey)

Parameters

bstrPubKey

[in] String containing the public key used by Windows Media Rights Manager to verify the signature.

Return Values

If the method succeeds, it returns a Long indicating whether the signature verification succeeded (the verifyResult parameter is 1 if signature verification succeeds, 0 if it fails). If the property fails, a number is returned in the error object.

Example Code

' Assume that the content packager has sent encrypted content to 
' a consumer. The consumer's computer determines that a license is
' needed and issues a challenge to the license issuer. The license 
' issuer can use the WMRMHeader.Verify() method to determine whether
' the header contained in the challenge is the same header sent by
' the content packager.  The license issuer must use the public signing
' key sent by the content packager.


' Declare variables and objects.

    Dim sHeader
    Dim sPubKey
    Dim lResult
    Dim HeaderObj
    Dim ChallengeObj

' Create objects.

    Set HeaderObj = Server.CreateObject("Wmrmobjs.WMRMHeader")
    Set ChallengeObj = Server.CreateObject("Wmrmobjs.WMRMChallenge")
  
' Retrieve the header from the challenge.

    sHeader = ChallengeObj.Header

' Set the header into the WMRMHeader object.

    HeaderObj.Header = sHeader

' Verify the header with the public key, sPubKey, created by the 
' content packager.

    lResult = HeaderObj.Verify(sPubKey)
    if (lResult = 0) then
        ' The header has been corrupted.
    end if

Requirements

Version: Windows Media Rights Manager 7 SDK or later

Reference: wmrmobjs 1.0 Type Library

Library: wmrmobjs.dll

Platform: Windows Server 2003

See Also

• WMRMChallenge Object
• WMRMHeader Object
• WMRMHeader.Sign